Master Composter/Soil Builder Program
Find out how Seattle residents are helping other Seattle residents manage organic wastes for a healthier city.
The Master Composter/Soil Builder (MC/SB) volunteer program is a key partner in Seattle’s waste reduction and recycling efforts. We help city residents to build worm bins, recycle food and yard waste at their homes, build healthy urban soils and support thriving landscapes throughout the city.
Become A Master Composter/Soil Builder
If you love composting and you're interested in public education and outreach, apply to become a Mater Composter! Receive in-depth compost education with a team of diverse Seattle residents, then share your valuable knowledge and experience with the wider community. Find out more...
Current Master Composter/Soil Builders
If you have already received training, check for current information.
We Will Visit You Anywhere in Seattle!
Master Composter/Soil Builders volunteers will come to your location to share with your group what they know about composting food and yard waste, how to set up a worm bin or other compost system, and how you can build healthy soil. Find out more...
Find out about the new Master Recycler Composter training in Issaquah!
The Master Composters have put together an audio series. Enjoy listening to this crash course about how to think like a Master Composter and take advantage of some of the education which goes well beyond composting. Listen now.
Online Composting Info
You can learn a lot about composting by reading some of these info sheets.
The Master Composter/Soil Builder program is a part of the Natural Soil Building program, managed by Seattle Tilth and sponsored by Seattle Public Utilities.
We began in 1986, training volunteers to teach others about composting. Today there are more than 500 Master Composter training programs in North American and abroad.
Questions? Contact Sheri Hinshaw at (206) 633-0451 x125 or firstname.lastname@example.org.
Enjoy this lively, professional video about composting! It's from "Growing A Greener World" with Joe Lamp'l, Nathan Lyon and Patti Moreno. Graham Golbuff, Resource Conservation Program Educator, leads a compost workshop and gives a little tour of our first community learning garden in Wallingford.